New Hampshire has an average annual temperature of
46.6°F
(across all 3 cities) with approximately
1148 mm of annual precipitation
and average humidity of 82%.
The warmest city is Nashua
with average July highs of 88.9°F,
while Concord
is the coldest with average January lows of -12.3°F.
This page covers 45 years of NASA POWER climate data (1981–2025)
including temperature, rainfall, humidity, wind speed, and solar radiation.
Jul is typically the warmest month across New Hampshire with average highs around
87.8°F, while
Jan is the coldest with average lows near
-7.8°F.
Oct is the wettest month with approximately
112 mm of rainfall on average.
Month
Max Temp
Min Temp
Avg Temp
Rain (mm)
Humidity
Wind (m/s)
Solar (kWh/m²)
Jan
46.6°F
-7.8°F
19.4°F
84
90%
0.5
1.70
Feb
48°F
-5.3°F
21.4°F
78
90%
0.7
2.60
Mar
60.1°F
3°F
31.5°F
96
84%
0.7
3.70
Apr
71.8°F
23.2°F
47.5°F
102
80%
0.3
4.60
May
80.2°F
33.1°F
56.7°F
99
79%
0.2
5.30
Jun
85.5°F
43.5°F
64.6°F
102
80%
0.2
5.70
Jul
87.8°F
51.6°F
69.8°F
105
79%
0.2
5.80
Aug
87.6°F
49.1°F
68.4°F
96
78%
0.2
5.20
Sep
84.2°F
39°F
61.7°F
93
77%
0.2
4.20
Oct
74.3°F
27.9°F
51.1°F
112
80%
0.2
2.90
Nov
64.2°F
17.2°F
40.8°F
99
83%
0.2
1.90
Dec
51.8°F
1.8°F
26.8°F
102
88%
0.3
1.50
📈 New Hampshire Yearly Climate Trends
🌡️ Annual Temperature Trend
State-wide avg annual high & low · Last 10 years
📈 New Hampshire Long-Term Climate Trends (1981–2025)
This chart shows how New Hampshire's average temperatures have shifted across 45 years.
Use the range buttons to focus on recent decades or view the full historical record.
Data is averaged across all 3 cities in the state.
🌧️ Annual Precipitation Trend
State-wide avg annual precipitation · Last 10 years · mm/year
🔗 Explore Cities in New Hampshire
Browse detailed weather history, monthly averages, and 45-year climate trends for every city in New Hampshire.
Nashua is the wettest city in New Hampshire with approximately 1156 mm of annual precipitation on average. View Nashua weather history →
What is the warmest month in New Hampshire?▼
Jul is the warmest month across New Hampshire, with state-wide average highs of 87.8°F and average lows of 51.6°F.
How many cities in New Hampshire have weather data?▼
TownPillar has historical weather data for 3 cities in New Hampshire, covering 45 years of NASA POWER climate records from 1981 to 2025.
Which month has the most sunshine in New Hampshire?▼
Jul is the sunniest month across New Hampshire with an average solar radiation of 5.80 kWh/m²/day state-wide. This solar radiation data from NASA POWER is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability.
Where does this climate data come from?▼
All data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis data. It includes monthly temperature, precipitation, humidity, wind speed, and solar radiation at 0.5° × 0.625° spatial resolution.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources). Data covers 45 years (1981–2025) across 3 cities in New Hampshire at monthly temporal resolution.